SARCOPHAGA AND ALLIES 177 



22. Fourth abdominal segment broadly red apically 



(Fla., Bahamas) 



No. 100. spectabilis n. sp. 

 Fourth abdominal segment black ( Fla. ) 



No. 99. hillifera n. sp. 



23. Parafacials with satiny deep golden yellow pol- 



len and almost imperceptible hairs (West 

 Indies) No. 103. 2)eltata n. sp. 



Parafacials gray or with but little yellowish 

 tinge, and with distinct hairs 24. 



24. The row of bristles on the fourth abdominal 



segment entirely marginal 25. 



The row marginal at the side, subdiscal in the 

 middle (N. J.) 



No. 104. suhdiscalis n. sp. 



25. Anterior acrostichals distinct 26. 

 Anterior acrostichals not differentiated, at most 



faintly discernible at the front edge of the 

 thorax 27. 



26. Blackish species, front narrowest a little below 



anterior ocellus, thence rapidly widening 

 (La., Ga., Tex.) 



No. 105. impar n. sp. 

 Gray species, the front parallel nearly to tlie 

 antenucT (Kans., Tex.) 



No. 106. sulculata n. sp. 



27. Third abdominal segment without median mar- 



ginals 28. 



Third abdominal with median marginals 29. 



28. Forceps long, black, simple (Montana, Colo.) 



No. 107. cooleyi Park. 

 Forceps with a long yellow process on the at- 

 tached part, simulating the real forceps 

 (Texas, S. Cal., W. I.; Group H) 



No. 128. rohusta n. sp. 



29. Forceps with nearly parallel front and back 



edges, and an apical tooth formed by an ex- 

 cision of the front edge (widespread) 



No. 108. sarracenioides n. sp. 

 Forceps tapering to a sharp point 30. 



